3651790

Information

• Patent Grant
• 3651790

• References
• Source

• Patent Number

  3,651,790

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1972
  52 years ago

• CPC

  • F24H1/403 - the water tubes being arranged in one or more circles around the burner
  • F22B21/065 - involving an upper and lower drum of annular shape
  • F24D3/087 - Tap water heat exchangers specially adapted therefore

• US Classifications

  • 122 - Liquid heaters and vaporizers